RS232 Serial Cables DB 9PIN Female To Female, DB9 Male To Male Extension Cables

Place of Origin: Guangdong, China	Brand Name: GuangHui Electronics / OEM
Cable type: RS232 Serial Cables	Application: computer,projector...
Connector1: DB 9pin Female/ Male	Connectors 2: DB 9pin Female/ Male
Color: light blue/ Optional	Cable spc: UL2464 28awg*9c + AE
Cable length:  1.2 M/1.5M/2M / Optional	Wire guage: 24AWG, 26AWG, 28AWG etc optional
Rated voltage: 300V	Rated temperature: 80 Celsius
Certification: RoHS, CE	OD: 6.0MM
Jacket: PVC	Packing: PE bag
Samples: available	Product weight: 0.1kg
MOQ: 500PCS	Standards: CSA, ISO 9001 manufacturer

According to the number of interfaces, it can be subdivided into Type A (15-pin), Type B (25-pin), Type C (37-pin), Type D (50-pin), and Type E (9-pin). Therefore, the common computer parallel port is the DB25-pin connector. The serial port should be a DE9-pin connector.

 

Because the serial and parallel ports of early computers used DB25-pin connectors, and people used to write down the letters B and D together as the common name of the D-type interface, so that the computer serial port was changed to 9-pin After the interface, people use DB9 more than DE9 to call the 9-pin interface. The result of the further promotion of this habit is that nowadays people use DBxx to represent the D-type interface, and the number xx is the number of pins of the interface.

 

Common DB interfaces on computers are:

Serial communication interface RS232 9-pin --DB9

Display VGA 15 pin - DB15

Parallel printer LPT 25 hole -DB25

Generally only 3 ports are used for communication, rx, tx, Gnd